MMBZ20VALT1 Equivalent & Substitute Parts

Part Overview

The MMBZ20VALT1 is a Transient Voltage Suppressor (TVS) Zener diode manufactured by onsemi, designed for dual-channel clamping applications in a SOT-23 surface mount package. This component provides 40W peak pulse power dissipation with a 20V clamping specification. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing design support and procurement.

Substiute Parts

MMBZ20VALT1

onsemiIn Stock: 2054MMBZ20VALT1 Datasheet

Current PartRFQ

MMBZ20VALT1G

onsemiIn Stock: 4427362MMBZ20VALT1G Datasheet

DirectRFQ

MMBZ20VAL,215

Nexperia USA Inc.In Stock: 51230MMBZ20VAL,215 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMBZ20VALT1 is determined by the following critical parameters:

• Unidirectional Channels: 2 (dual-channel configuration required)
• Power - Peak Pulse: 40W (minimum rating)
• Package / Case: SOT-23-3 / TO-236-3 / SC-59 (surface mount compatibility)
• Voltage - Clamping (Max) @ Ipp: 28V (maximum allowable clamping voltage)
• Current - Peak Pulse (10/1000µs): 1.4A (peak pulse current rating)
• Mounting Type: Surface Mount

Two active substitute parts meet these electrical and mechanical criteria and share the same base product number (MMBZ20):

1. MMBZ20VALT1G (onsemi) - Direct manufacturer continuation with identical electrical specifications
2. MMBZ20VAL,215 (Nexperia USA Inc.) - Cross-manufacturer equivalent with automotive qualification

Parameter Comparison

Engineering Selection Recommendations

MMBZ20VALT1G (onsemi) is the primary substitute. It maintains direct manufacturer continuity from onsemi, shares identical electrical specifications, and achieves ROHS3 compliance. This part is recommended for designs requiring seamless transition from the obsolete MMBZ20VALT1 with no design modifications.

MMBZ20VAL,215 (Nexperia USA Inc.) is a qualified cross-manufacturer alternative. It meets all electrical and mechanical requirements with ROHS3 compliance and includes AEC-Q101 automotive qualification. This part is suitable for applications requiring automotive-grade components or when onsemi supply is constrained. The TO-236AB package designation is functionally equivalent to SOT-23-3 in surface mount applications.

Both substitutes are active products with established supply chains, eliminating obsolescence risk associated with the original MMBZ20VALT1.

Frequently Asked Questions (FAQ)

Q: Can MMBZ20VALT1G be used as a direct replacement for MMBZ20VALT1?

A: Yes. MMBZ20VALT1G is the direct onsemi continuation of the obsolete MMBZ20VALT1. Electrical specifications, package type (SOT-23-3), and pin configuration are identical. No circuit modifications are required.

Q: What is the difference between MMBZ20VALT1G and MMBZ20VAL,215?

A: Both parts share identical electrical specifications (40W peak pulse, 28V clamping, 1.4A peak pulse current, dual channels). The primary differences are manufacturer (onsemi vs. Nexperia), package designation (SOT-23-3 vs. TO-236AB), and automotive qualification (MMBZ20VAL,215 includes AEC-Q101). Functionally, they are equivalent in circuit performance.

Q: Are the SOT-23-3 and TO-236AB packages interchangeable?

A: Yes. SOT-23-3 and TO-236AB are equivalent surface mount package designations for the same physical form factor. Both are 3-pin configurations suitable for dual-channel TVS diode applications. PCB footprints and reflow profiles are compatible.

Q: Does MMBZ20VAL,215 automotive qualification affect non-automotive applications?

A: No. AEC-Q101 qualification indicates the part meets automotive industry reliability standards. Non-automotive applications benefit from this enhanced qualification without penalty. The part is suitable for general-purpose transient voltage suppression across all application categories.

Q: Why is RoHS compliance important for this substitution?

A: The original MMBZ20VALT1 is RoHS non-compliant. Both active substitutes (MMBZ20VALT1G and MMBZ20VAL,215) achieve ROHS3 compliance, meeting current regulatory requirements for electronic component procurement and end-product compliance in most markets.

Q: What is the inventory status of these substitutes?

A: MMBZ20VALT1G has 4,427,300 units in stock. MMBZ20VAL,215 has 51,143 units in stock. Both parts have established supply availability for production and design requirements.